Final answer:
The components of the array alpha are double values.
Step-by-step explanation:
The statement double alpha[10][5]; creates a two-dimensional array called alpha with 10 rows and 5 columns. Each component or element of the array represents a double value, which is a floating-point number with double precision.
To calculate the total number of components in the array, you multiply the number of rows (10) by the number of columns (5), which gives you a total of 50 components.
Therefore, the correct answer is d. 150.